//
// Private string definitions for CUPS.
//
// Copyright © 2021-2023 by OpenPrinting.
// Copyright © 2007-2018 by Apple Inc.
// Copyright © 1997-2006 by Easy Software Products.
//
// Licensed under Apache License v2.0.  See the file "LICENSE" for more
// information.
//

#ifndef _CUPS_STRING_PRIVATE_H_
#  define _CUPS_STRING_PRIVATE_H_
#  include "config.h"
#  include "base.h"
#  include <stdio.h>
#  include <stdlib.h>
#  include <stdarg.h>
#  include <string.h>
#  include <ctype.h>
#  include <errno.h>
#  include <locale.h>
#  include <time.h>
#  ifdef __cplusplus
extern "C" {
#  endif // __cplusplus


//
// String pool structures...
//

#  define _CUPS_STR_GUARD	0x12344321

typedef struct _cups_sp_item_s		// String Pool Item
{
#  ifdef DEBUG_GUARDS
  unsigned int	guard;			// Guard word
#  endif // DEBUG_GUARDS
  unsigned int	ref_count;		// Reference count
  char		str[1];			// String
} _cups_sp_item_t;


//
// Replacements for the ctype macros that are not affected by locale, since we
// really only care about testing for ASCII characters when parsing files, etc.
//
// The _CUPS_INLINE definition controls whether we get an inline function body,
// and external function body, or an external definition.
//

#  if defined(__GNUC__) || __STDC_VERSION__ >= 199901L
#    define _CUPS_INLINE static inline
#  elif defined(_MSC_VER)
#    define _CUPS_INLINE static __inline
#  elif defined(_CUPS_STRING_C_)
#    define _CUPS_INLINE
#  endif // __GNUC__ || __STDC_VERSION__

#  ifdef _CUPS_INLINE
_CUPS_INLINE int			// O - 1 on match, 0 otherwise
_cups_isalnum(int ch)			// I - Character to test
{
  return ((ch >= '0' && ch <= '9') || (ch >= 'A' && ch <= 'Z') || (ch >= 'a' && ch <= 'z'));
}

_CUPS_INLINE int			// O - 1 on match, 0 otherwise
_cups_isalpha(int ch)			// I - Character to test
{
  return ((ch >= 'A' && ch <= 'Z') || (ch >= 'a' && ch <= 'z'));
}

_CUPS_INLINE int			// O - 1 on match, 0 otherwise
_cups_islower(int ch)			// I - Character to test
{
  return (ch >= 'a' && ch <= 'z');
}

_CUPS_INLINE int			// O - 1 on match, 0 otherwise
_cups_isspace(int ch)			// I - Character to test
{
  return (ch == ' ' || ch == '\f' || ch == '\n' || ch == '\r' || ch == '\t' || ch == '\v');
}

_CUPS_INLINE int			// O - 1 on match, 0 otherwise
_cups_isupper(int ch)			// I - Character to test
{
  return (ch >= 'A' && ch <= 'Z');
}

_CUPS_INLINE int			// O - Converted character
_cups_tolower(int ch)			// I - Character to convert
{
  return (_cups_isupper(ch) ? ch - 'A' + 'a' : ch);
}

_CUPS_INLINE int			// O - Converted character
_cups_toupper(int ch)			// I - Character to convert
{
  return (_cups_islower(ch) ? ch - 'a' + 'A' : ch);
}
#  else
extern int _cups_isalnum(int ch);
extern int _cups_isalpha(int ch);
extern int _cups_islower(int ch);
extern int _cups_isspace(int ch);
extern int _cups_isupper(int ch);
extern int _cups_tolower(int ch);
extern int _cups_toupper(int ch);
#  endif // _CUPS_INLINE


//
// Prototypes...
//

extern ssize_t	_cups_safe_vsnprintf(char *buffer, size_t bufsize, const char *format, va_list args) _CUPS_PRIVATE;
extern void	_cups_strcpy(char *dst, const char *src) _CUPS_PRIVATE;
extern int	_cups_strcasecmp(const char *, const char *) _CUPS_PRIVATE;
extern int	_cups_strncasecmp(const char *, const char *, size_t n) _CUPS_PRIVATE;

extern char	*_cupsStrAlloc(const char *s) _CUPS_PRIVATE;
extern void	_cupsStrFlush(void) _CUPS_PRIVATE;
extern void	_cupsStrFree(const char *s) _CUPS_PRIVATE;
extern char	*_cupsStrRetain(const char *s) _CUPS_PRIVATE;
extern size_t	_cupsStrStatistics(size_t *alloc_bytes, size_t *total_bytes) _CUPS_PRIVATE;
extern char	*_cupsStrFormatd(char *buf, char *bufend, double number, struct lconv *loc) _CUPS_PRIVATE;
extern double	_cupsStrScand(const char *buf, char **bufptr, struct lconv *loc) _CUPS_PRIVATE;


#  ifdef __cplusplus
}
#  endif // __cplusplus
#endif // !_CUPS_STRING_PRIVATE_H_
